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Slit preventing and desilting device and method for harbor basin

A technology of dredging device and port basin, applied in breakwaters, water conservancy projects, marine engineering and other directions, can solve the problems of port abandonment, insufficient water depth, construction difficulties, etc. Effect

Active Publication Date: 2015-02-18
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high sand content of offshore currents, it is easy to deposit in the harbor basin, affecting the normal use of the port. If the deposit is serious, the water depth in many areas will not meet the requirements for ship navigation and berthing. Driving in a narrow area, there is a risk of being stranded if you deviate slightly from the route, and the port will face the consequences of abandonment
At present, the method of dredging the harbor basin is to use a large excavator to solve the problem of silting and insufficient water depth in the harbor basin by dredging.
However, this method is costly, takes a long time, and is difficult to construct.

Method used

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  • Slit preventing and desilting device and method for harbor basin
  • Slit preventing and desilting device and method for harbor basin
  • Slit preventing and desilting device and method for harbor basin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to Figure 1-4 , is a defense dredging device for harbor basins, which is installed in a harbor basin 1 surrounded by an outer breakwater 2 and an inner breakwater 3, a slope 4 is provided on the facing surface of the inner breakwater 3, and a water diversion groove 5 is provided on the top of the slope 4 . A sump 6 communicating with the water diversion tank 5 is provided near the opening in the harbor basin 1 . A number of wave-condensing plates 16 are arranged on the slope 4, and a trumpet-shaped wave channel 17 is formed between two adjacent wave-condensing plates 16 . A wedge-shaped guide groove 18 communicating with the water guide groove 5 is provided on the top of the wave channel 17 . After the wave enters the wave channel 17, the width gradually narrows, the wave height is gradually raised, and it is easier to turn into the water diversion groove 5, which is conducive to collecting more seawater. A main pressure pipeline 7 is provided at the bottom of...

Embodiment 2

[0036] refer to Figure 6 , is a harbor basin defense dredging device, the device is set in the harbor basin 1 surrounded by the outer breakwater 2 and the inner breakwater 3, the inner breakwater 3 is a self-supporting structure, and a water level raising device is provided on the side facing the water The water level raising device is a hollow box-type air chamber 19 that is arranged on the side of the water-facing surface of the inner breakwater 3 and extends into the water. The side wall of the air chamber 19 below the liquid surface 21 is provided with an opening 20, and the side wall above the liquid surface 21 A water inlet 22 is provided on the side wall of the air chamber 19 , and the water inlet 22 communicates with the water diversion groove 5 .

[0037] A method for anti-silting and dredging of harbor basins, comprising the following steps:

[0038] A. Set a hollow box-type air chamber 19 extending into the water on the inner breakwater 3 facing water of the harbo...

Embodiment 3

[0043] refer to Figure 7, which is another harbor basin anti-silting and dredging device, which is installed in the harbor basin 1 surrounded by the outer breakwater 2 and the inner breakwater 3, and the water level raising devices are respectively arranged on the facing water surfaces of the outer breakwater 2 and the inner breakwater 3 With the water diversion tank 5, a scouring and silting water outlet 8 communicating with the water diversion tank 5 is provided in the harbor basin 1. The waves are collected in the water diversion tank 5 through the water level raising device, and continuously discharged into the harbor basin 1 through the scouring outlet 8, which can effectively improve the water flow distribution in the harbor basin 1 and play an anti-silting effect. According to the distribution of the silt 12, the silting water outlet 8 is set, which can effectively play the role of dredging.

[0044] For the water level raising device, reference may be made to the spe...

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Abstract

The invention discloses a slit preventing and desilting device and method for a harbor basin. The slit preventing and desilting device is arranged in a harbor basin defined by groynes; a water level raising device is arranged on the water attaining surface of the groynes; a gutter communicated with the water level raising device is formed the groynes; erosion and deposition water outlets communicated with the gutter are formed in the harbor basin; the level of a wave is raised by the water level raising device; the wave is collected in the gutter and washed away through the erosion and deposition water outlets continuously. The slit preventing and desilting device has the advantages that the wave energy is used fully to raise the water level; erosion and deposition water flow is formed after water storage; water flow distribution in the harbor basin can be improved effectively; water-sediment movement is prevented; silt accumulation layer in the harbor basin is removed; silt accumulation is prevented permanently.

Description

technical field [0001] The invention relates to the technical field of harbor basin engineering, in particular to an anti-silting and dredging method for harbor basins. Background technique [0002] Many port waters in my country are affected by the tides in the open sea, and the water flow conditions are relatively complicated. Due to the high sand content of offshore currents, it is easy to silt in the harbor basin, affecting the normal use of the port. If the silt is serious, the water depth in many areas will not meet the requirements for ship navigation and berthing. Driving in a narrow area, there is a danger of being stranded if you deviate slightly from the route, and the port will face the consequences of being abandoned. The current method of dredging the harbor basin is to use large excavators to solve the problem of silting and insufficient water depth in the harbor basin through dredging. However, this method is costly, takes a long time, and is difficult to c...

Claims

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Application Information

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IPC IPC(8): E02B3/02
CPCE02B3/023E02B3/06Y02A10/11
Inventor 丁桦盛国强沈正王道儒
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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